Re-generate the schema using `bin/rake erd`.
NB: there's a way to update the PDF automatically after each migration.
But it requires `graphviz` to be installed locally, which I'm not
sure I want to require by default.
Rationale:
- is true for only 0.06% of Dossiers
- is not displayed anymore anyways
- will be a rare case for now
* FC adoption is not insane
* FC used more for personal than professional
matters
* not always the mandataires sociaux that fill
dossiers for their companies, so not that
relevant
- we can add it back later
